How does that answer the question how it’s relevant today if its accomplishment was 10 years ago?
They still release music albums on cassette tapes, sure it’s like .0005% market share, but they were popular 30 years ago! They sold billions! If you don’t own a cassette player, is that enough of an argument for you to care about buying a cassette player and cassettes? This is your argument over Toonami. It was popular over 20 years ago, and they were revived a decade ago, and it still exists.
It’s like, big whoop. There’s a lot of outdated things that still exist that cater to a small niche. That doesn’t make it relevant.